super473

PLC CJ1G-CPU45H Problem

3 posts in this topic

Hi guys,i have a PLC Omron CJ1G CPU-45H ,The comunicate way from PLC to PC is with RS232C PORT and in the PLC with peripheral port,for 1 year everything works fine but for almost 2 months the program keep display the errorr of "errorr comunicating with plc"then one day stoped from working,i been changing the PC and the cable but the problem is not solved,i olso buy a new plc but nothing,the PLC comunicate with CX Programer normally but not comunicate with WinPlc ,i done everything but nothing,can someone help with this problem

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Posted (edited)

The RS232C port is not a standard pin out. Did you replace with the proper cable?

Mr_PLC_HostLink_Cable.PNG.cdb21f39a18224

Edited by IO_Rack

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Has the comm port # changed on your PC? 

Have you tried forcing a new comm port number from device manager and using that?

Are you running the PC program as administrator?

Have the DIP switches on the PLC changed?

 

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